Importance of Tungsten Spectroscopy to the Success of ITER

Authored by: R. Neu , T. Pütterich , C. Biedermann , R. Dux , R. Radtke

Handbook for Highly Charged Ion Spectroscopic Research

Print publication date:  September  2011
Online publication date:  April  2016

Print ISBN: 9781420079043
eBook ISBN: 9781420079050
Adobe ISBN:

10.1201/b11319-14

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Abstract

The International Thermonuclear Experimental Reactor (ITER), which began construction in 2007, will demonstrate the physical and technological feasibility of fusion for power production [1]. It will employ tungsten at areas with high particle and power load (divertor entrance and baffles) owing to its high-energy threshold for sputtering and its low sputtering yield compared to the low-Z materials such as C and Be, which will be used in parallel. Although the requirements for the plasma-facing components (PFCs) in ITER will already be higher than in the present-day devices, the step to a quasisteady-state DEMO reactor will still considerably increase the particle fluencies to the PFCs. Therefore, it is foreseen that tungsten will be used as an armor material for all PFCs [2] in future fusion reactors.

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